Mineralogy Database

Feklichevite Mineral Data

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General Feklichevite Information

Help on Chemical Formula: Chemical Formula: Na11Ca9(Fe+++,Fe++)2Zr3Nb[Si25O73](OH,H2O,Cl,O)5
Help on Composition: Composition: Molecular Weight = 3,038.68 gm
   Sodium      8.42 %  Na   11.35 % Na2O
   Strontium   0.23 %  Sr    0.27 % SrO
   Calcium    11.01 %  Ca   15.41 % CaO
   Lanthanum   0.09 %  La    0.11 % La2O3
   Cerium      0.14 %  Ce    0.16 % Ce2O3
   Hafnium     0.53 %  Hf    0.62 % HfO2
   Zirconium   8.56 %  Zr   11.56 % ZrO2
   Titanium    0.08 %  Ti    0.13 % TiO2
   Manganese   0.38 %  Mn    0.49 % MnO
   Niobium     1.68 %  Nb    2.41 % Nb2O5
   Iron        3.82 %  Fe    2.06 % FeO /  3.18 % Fe2O3
   Silicon    23.33 %  Si   49.91 % SiO2
   Hydrogen    0.20 %  H     1.82 % H2O
   Chlorine    0.61 %  Cl    0.61 % Cl
                -   %   Cl   -0.14 % -O=Cl2   
   Oxygen     40.80 %  O
   Fluorine    0.12 %  F     0.12 % F
                -   %   F    -0.05 % -O=F2    
             ______        ______ 
             100.00 %      100.02 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na11.13Ca8.35Mn2+0.21Sr0.08Ce0.03La0.02Fe3+1.21Fe2+0.87Zr2.85Hf0.09Ti0.05Nb0.55Si25.24 O73(OH)2.41(H2O)1.87O0.21Cl0.52F0.19
Help on Environment: Environment: Found in a pegmatoidal cancrinite syenite vein. Eudialyte group; structure
Help on IMA Status: IMA Status: Approved IMA 2001 (Dana # Added)
Help on Locality: Locality: Kovdor phlogopite mine, Kovdor massif, Kola Peninsula, Russia Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for V. G. Feklichev (1933-1999), Russian mineralogist.
Help on Synonym: Synonym: IMA2000-017